Sentry Server Health Tests

Sentry Server File Descriptors

This Sentry Server health test checks that the number of file descriptors used does not rise above some percentage of the Sentry Server file descriptor limit. A failure of this health
test may indicate a bug in either Hadoop or Cloudera Manager. Contact Cloudera support. This test can be configured using the File Descriptor Monitoring Thresholds
Sentry Server monitoring setting.

Short Name: File Descriptors

Property Name

Description

Template Name

Default Value

Unit

File Descriptor Monitoring Thresholds

The health test thresholds of the number of file descriptors used. Specified as a percentage of file descriptor
limit.

The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump
directory.

heap_dump_directory_free_space_absolute_thresholds

critical:5.36870912E9, warning:1.073741824E10

BYTES

Heap Dump Directory Free Space Monitoring Percentage Thresholds

The health test thresholds for monitoring of free space on the filesystem that contains this role's heap dump
directory. Specified as a percentage of the capacity on that filesystem. This setting is not used if a Heap Dump Directory Free Space Monitoring Absolute Thresholds setting is configured.

heap_dump_directory_free_space_percentage_thresholds

critical:never, warning:never

PERCENT

Sentry Server Host Health

This Sentry Server health test factors in the health of the host upon which the Sentry Server is running. A failure of this test means that the host running the Sentry Server is
experiencing some problem. See that host's status page for more details.This test can be enabled or disabled using the Sentry Server Host Health Test Sentry Server
monitoring setting.

The health test thresholds for monitoring of free space on the filesystem that contains this role's log
directory.

log_directory_free_space_absolute_thresholds

critical:5.36870912E9, warning:1.073741824E10

BYTES

Log Directory Free Space Monitoring Percentage Thresholds

The health test thresholds for monitoring of free space on the filesystem that contains this role's log directory.
Specified as a percentage of the capacity on that filesystem. This setting is not used if a Log Directory Free Space Monitoring Absolute Thresholds setting is configured.

log_directory_free_space_percentage_thresholds

critical:never, warning:never

PERCENT

Sentry Server Process Status

This Sentry Server health test checks that the Cloudera Manager Agent on the Sentry Server host is heart beating correctly and that the process associated with the Sentry Server role is
in the state expected by Cloudera Manager. A failure of this health test may indicate a problem with the Sentry Server process, a lack of connectivity to the Cloudera Manager Agent on the Sentry
Server host, or a problem with the Cloudera Manager Agent. This test can fail either because the Sentry Server has crashed or because the Sentry Server will not start or stop in a timely fashion.
Check the Sentry Server logs for more details. If the test fails because of problems communicating with the Cloudera Manager Agent on the Sentry Server host, check the status of the Cloudera Manager
Agent by running /etc/init.d/cloudera-scm-agent status on the Sentry Server host, or look in the Cloudera Manager Agent logs on the Sentry Server host for more details.
This test can be enabled or disabled using the Sentry Server Process Health Test Sentry Server monitoring setting.

Short Name: Process Status

Property Name

Description

Template Name

Default Value

Unit

Sentry Server Process Health Test

Enables the health test that the Sentry Server's process state is consistent with the role configuration

sentry_server_scm_health_enabled

true

no unit

Sentry Server Swap Memory Usage

This Sentry Server health test checks the amount of swap memory in use by the role. A failure of this health test may indicate that your machine is overloaded. This test can be
configured using the Process Swap Memory Thresholds monitoring settings.

Short Name: Swap Memory Usage

Property Name

Description

Template Name

Default Value

Unit

Process Swap Memory Thresholds

The health test thresholds on the swap memory usage of the process.

process_swap_memory_thresholds

critical:never, warning:any

BYTES

Sentry Server Unexpected Exits

This Sentry Server health test checks that the Sentry Server has not recently exited unexpectedly. The test returns "Bad" health if the number of unexpected exits goes above a critical
threshold. For example, if this test is configured with a critical threshold of 1, this test would return "Good" health if there have been no unexpected exits recently. If there has been 1 or more
unexpected exits recently, this test would return "Bad" health. This test can be configured using the Unexpected Exits Thresholds and Unexpected
Exits Monitoring Period Sentry Server monitoring settings.

Short Name: Unexpected Exits

Property Name

Description

Template Name

Default Value

Unit

Unexpected Exits Monitoring Period

The period to review when computing unexpected exits.

unexpected_exits_window

5

MINUTES

Unexpected Exits Thresholds

The health test thresholds for unexpected exits encountered within a recent period specified by the
unexpected_exits_window configuration for the role.

If this documentation includes code, including but not limited to, code examples, Cloudera makes this available to you under the terms of the Apache License, Version 2.0, including any required
notices. A copy of the Apache License Version 2.0 can be found here.